Question 1

More energy is obtained when glucose is oxidized under aerobic conditions rather than anaerobic conditions.

Accepted Answer

A) True 
 B)False  True

Question 2

The number of ATP molecules generated from each NADH produced in the conversion of pyruvate to acetyl CoA is _______.

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4 C

Question 3

Under anaerobic conditions, yeasts and most plant cells convert pyruvate to:

Accepted Answer

A) acetyl CoA. 
B) lactate. 
C) ethanol and carbon dioxide. 
D) ATP. 
E) glucose. 
A) acetyl CoA. 
B) lactate. 
C) ethanol and carbon dioxide. 
D) ATP. 
E) glucose. C

Question 4

Which of the following statements about the reactions of glucose oxidation is FALSE?

Accepted Answer

A) The glucose molecule is hydrolyzed. 
B) Hydrogen atoms are removed. 
C) Oxygen is oxidized. 
D) Energy is released. 
E) Electrons go from higher to lower energy levels. 
A) The glucose molecule is hydrolyzed. 
B) Hydrogen atoms are removed. 
C) Oxygen is oxidized. 
D) Energy is released. 
E) Electrons go from higher to lower energy levels.

Question 5

For each molecule of glucose that completes glycolysis, how many NAD+ molecules are reduced?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 6

Which of the following does NOT occur during respiration?

Accepted Answer

A) hydrolysis of starch to glucose 
B) formation of acetyl CoA 
C) electron transport chain 
D) citric acid cycle 
E) glycolysis 
A) hydrolysis of starch to glucose 
B) formation of acetyl CoA 
C) electron transport chain 
D) citric acid cycle 
E) glycolysis

Question 7

Which of the following statements concerning glycolysis is FALSE?

Accepted Answer

A) It is considered a primitive process. 
B) It is an aerobic process. 
C) It occurs in a series of 10 steps. 
D) It is carried out by virtually all cells. 
E) Its reactions are catalyzed by specific enzymes. 
A) It is considered a primitive process. 
B) It is an aerobic process. 
C) It occurs in a series of 10 steps. 
D) It is carried out by virtually all cells. 
E) Its reactions are catalyzed by specific enzymes.

Question 8

The complete oxidation of one molecule of glucose requires two turns around the citric acid cycle.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements concerning fermentation is FALSE?

Accepted Answer

A) It occurs under anaerobic conditions. 
B) It involves O2 as the ultimate electron acceptor. 
C) It involves the breakdown of organic molecules. 
D) It releases less than 686 kcal/mole of glucose. 
E) It is an exergonic process. 
A) It occurs under anaerobic conditions. 
B) It involves O2 as the ultimate electron acceptor. 
C) It involves the breakdown of organic molecules. 
D) It releases less than 686 kcal/mole of glucose. 
E) It is an exergonic process.

Question 10

The preparatory phase of glycolysis involves:

Accepted Answer

A) 2 molecules of ATP only. 
B) 2 molecules of NAD+ only. 
C) 2 molecules of NADH only. 
D) 1 molecule of ATP and 1 molecule of NADH. 
E) 1 molecule of ATP and 1 molecule of NAD+. 
A) 2 molecules of ATP only. 
B) 2 molecules of NAD+ only. 
C) 2 molecules of NADH only. 
D) 1 molecule of ATP and 1 molecule of NADH. 
E) 1 molecule of ATP and 1 molecule of NAD+.

Question 11

Who am I? I move freely within the mitochondrial membrane and thus shuttle electrons between other carriers.

Accepted Answer

A) CoQ 
B) Fe-S proteins 
C) cytochromes 
D) cytochrome oxidase 
E) CoA 
A) CoQ 
B) Fe-S proteins 
C) cytochromes 
D) cytochrome oxidase 
E) CoA

Question 12

The energy released by the flow of electrons along the electron transport chain is used directly to:

Accepted Answer

A) form ATP from ADP and phosphate. 
B) oxidize NADH. 
C) reduce FAD. 
D) decarboxylate citrate. 
E) pump protons. 
A) form ATP from ADP and phosphate. 
B) oxidize NADH. 
C) reduce FAD. 
D) decarboxylate citrate. 
E) pump protons.

Question 13

In the citric acid cycle, how many molecules of NADH are produced per molecule of glucose?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 4 
E) 6 
A) 0 
B) 1 
C) 2 
D) 4 
E) 6

Question 14

For each glucose molecule that begins respiration, 38 ATPs are formed.

Accepted Answer

A) True 
 B)False

Question 15

Formation of ATP from ADP and phosphate as a result of electron transport occurs in:

Accepted Answer

A) the citric acid cycle. 
B) the formation of acetyl CoA. 
C) fermentation. 
D) glycolysis. 
E) oxidative phosphorylation. 
A) the citric acid cycle. 
B) the formation of acetyl CoA. 
C) fermentation. 
D) glycolysis. 
E) oxidative phosphorylation.

Question 16

In the citric acid cycle, ATP is produced in some reactions and consumed in others.

Accepted Answer

A) True 
 B)False

Question 17

Ubiquinone is also called coenzyme Q.

Accepted Answer

A) True 
 B)False

Question 18

The electrochemical gradient resulting from electron transport is due to differences in ______ across the inner mitochondrial membrane.

Accepted Answer

A) only the electric charge 
B) proton concentration only 
C) electric charge and proton concentration 
D) only the ATP concentration 
E) ATP and NAD+ concentrations 
A) only the electric charge 
B) proton concentration only 
C) electric charge and proton concentration 
D) only the ATP concentration 
E) ATP and NAD+ concentrations

Question 19

Most of the ATP formed in respiration is produced by reactions associated with:

Accepted Answer

A) the electron transport chain. 
B) the citric acid cycle. 
C) glycolysis. 
D) fermentation. 
E) the conversion of pyruvate to acetyl CoA. 
A) the electron transport chain. 
B) the citric acid cycle. 
C) glycolysis. 
D) fermentation. 
E) the conversion of pyruvate to acetyl CoA.

Question 20

In the citric acid cycle, how many molecules of FADH are produced per molecule of glucose?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Exam 6: Respiration

More energy is obtained when glucose is oxidized under aerobic conditions rather than anaerobic conditions.

The number of ATP molecules generated from each NADH produced in the conversion of pyruvate to acetyl CoA is _______.

Under anaerobic conditions, yeasts and most plant cells convert pyruvate to:

Which of the following statements about the reactions of glucose oxidation is FALSE?

For each molecule of glucose that completes glycolysis, how many NAD+ molecules are reduced?

Which of the following does NOT occur during respiration?

Which of the following statements concerning glycolysis is FALSE?

The complete oxidation of one molecule of glucose requires two turns around the citric acid cycle.

Which of the following statements concerning fermentation is FALSE?

The preparatory phase of glycolysis involves:

Who am I? I move freely within the mitochondrial membrane and thus shuttle electrons between other carriers.

The energy released by the flow of electrons along the electron transport chain is used directly to:

In the citric acid cycle, how many molecules of NADH are produced per molecule of glucose?

For each glucose molecule that begins respiration, 38 ATPs are formed.

Formation of ATP from ADP and phosphate as a result of electron transport occurs in:

In the citric acid cycle, ATP is produced in some reactions and consumed in others.

Ubiquinone is also called coenzyme Q.

The electrochemical gradient resulting from electron transport is due to differences in ______ across the inner mitochondrial membrane.

Most of the ATP formed in respiration is produced by reactions associated with:

In the citric acid cycle, how many molecules of FADH are produced per molecule of glucose?

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

For each molecule of glucose that completes glycolysis, how many NAD⁺ molecules are reduced?